[American Thoracic Society American Thoracic Society 2012 International Conference, May 18-23, 2012 • San Francisco, California - ()] A101. PHARMACOLOGICAL TREATMENT OF COPD: OLD AND NEW - Pearl Therapeutics' Combination LAMA/LABA MDI (GFF-MDI, PT003) Provides A Significant Benefit On Home Peak Expiratory Flow Rate (PEFR) And Reduces The Need For Rescue Albuterol Use Compared To Its Components Administered Alone, Spiriva® Handihaler®, And Foradil® Aerolizer® In A Randomized, Double-Blind, Placebo-Controlled Phase 2b Study In Patients With COPD